<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Gox Editor</title>
</head>

<body>
    <div style="margin-top: 10px; margin-bottom: 10px;"><span id="fileNameLabelID"></span></div>
    <div>
        <button id="btnLoad">Load</button>
        <button id="btn3">点我3</button>
        <button id="btn4">点我4</button>
    </div>
        <plaintext#source type="text/html">abc</plaintext>

</body>

</html>